Controller for handpiece



FIG. 1 is a front elevational view of my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side elevational view thereof shown at a larger scale for ease of illustration;

FIG. 4 is a left side elevational view thereof shown at a larger scale for ease of illustration; the broken lines are shown for illustrative purposes only and form no part of the claimed design;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top plan view thereof indicating cross-sectional reference lines A-C and B-B′;

FIG. 8 is a front elevational view thereof of a cross section taken along line A-B-B′-C; and,

FIG. 9 is front top right side perspective view thereof.

The controller for a handpiece is a controller for controlling a handpiece that is used for nail treatment, toreutics, jewelry work, die machining, medical use, dental use and other precision machining. The controller for a handpiece is used to connect a handpiece plug to a connection terminal shown as a small circular cutout at a lower right side of the right side elevational view, and shown as a small circular cutout in a lower right of the reference perspective view. In a connected state, upon turning on a power switch shown as a circular shape at a left side of the right side elevational view, and as a circular shape outwardly protruding in the reference perspective view, a handpiece bit is caused to operate, thereby enabling cutting, grinding, piecing and other precision machining. Further, upon turning an adjustment knob cylindrically protruding and shown at a about a center of the right side elevational view and at a lower right side of the reference perspective view, a motor rotation speed is changed, thereby achieving bit operation suitable for precision machining. 

The ornamental design for the controller for handpiece, as shown and described. 